# Samacheer Kalvi Class 7 Science Measurement Questions - 1

Question: 1

Light year is the unit of

(A) density

(B) time

(C) distance

(D) both length and time

Ans: C

distance

Question: 2

Which of the following is a derived unit?

(A) area

(B) mass

(C) length

(D) time

Ans: A

area

Question: 3

Two spheres have equal mass and volume in the ratio 2:1. The ratio of their density is

(A) 1:2

(B) 1:4

(C) 2:1

(D) 4:1

Ans: C

2:1

Question: 4

SI unit of density is

(A) kg/m

(B) g/m3

(C) kg/m2

(D) kg/m3

Ans: D

kg/m3

Question: 5

Which of the following is correct?

(A) 1 L = 1cc

(B) 1L = 10cc

(C) 1L = 100cc

(D) 1L = 1000cc

Ans: D

1L = 1000cc

Question: 6

The amount of space occupied by a three dimensional object is known as its

(A) area

(B) mass

(C) volume

(D) density

Ans: C

volume

Question: 7

The largest distance between the earth and the sun is called as _____ position.

(A) aphelion

(B) normal

(C) perihelion

(D) none of the above

Ans: A

aphelion

Question: 8

1 litre = ____ cc.

(A) 0.1

(B) 10

(C) 100

(D) 1000

Ans: D

1000

Question: 9

The unit of volume is

(A) km

(B) cm3

(C) m2

(D) m3

Ans: D

m3

Question: 10

The shortest distance between the earth and the sun is called as _____ position.

(A) aphelion

(B) perihelion

(C) light year

(D) normal

Ans: B

perihelion